"No credit card data of any kind was accessed by hackers. There is no evidence of unauthorized activity of any kind on all but two Kickstarter user accounts," Strickler wrote in a blog post Saturday. "We’re incredibly sorry that this happened. We set a very high bar for how we serve our community, and this incident is frustrating and upsetting."

Strickler added that the company had improved security measures and that it was working with law enforcement closely.